init sidebar bundle separately to allow EE override

app/assets/javascripts/pages/projects/issues/show.js

+import initIssuableSidebar from '~/init_issuable_sidebar';
+import Issue from '~/issue';
+import ShortcutsIssuable from '~/shortcuts_issuable';
+import ZenMode from '~/zen_mode';
+import '~/notes/index';
+import '~/issue_show/index';
+
+export default function () {
+  new Issue(); // eslint-disable-line no-new
+  new ShortcutsIssuable(); // eslint-disable-line no-new
+  new ZenMode(); // eslint-disable-line no-new
+  initIssuableSidebar();
+}
+

app/assets/javascripts/pages/projects/issues/show/index.js

-import initIssuableSidebar from '~/init_issuable_sidebar';
 import initSidebarBundle from '~/sidebar/sidebar_bundle';
-import Issue from '~/issue';
-import ShortcutsIssuable from '~/shortcuts_issuable';
-import ZenMode from '~/zen_mode';
-import '~/notes/index';
-import '~/issue_show/index';
+import initShow from '../show';
 
 document.addEventListener('DOMContentLoaded', () => {
-  new Issue(); // eslint-disable-line no-new
-  new ShortcutsIssuable(); // eslint-disable-line no-new
-  new ZenMode(); // eslint-disable-line no-new
-  initIssuableSidebar();
+  initShow();
   initSidebarBundle();
 });

app/assets/javascripts/pages/projects/merge_requests/init_merge_request_show.js

+import MergeRequest from '~/merge_request';
+import ZenMode from '~/zen_mode';
+import initNotes from '~/init_notes';
+import initIssuableSidebar from '~/init_issuable_sidebar';
+import initDiffNotes from '~/diff_notes/diff_notes_bundle';
+import ShortcutsIssuable from '~/shortcuts_issuable';
+import Diff from '~/diff';
+import { handleLocationHash } from '~/lib/utils/common_utils';
+import howToMerge from '~/how_to_merge';
+import initPipelines from '~/commit/pipelines/pipelines_bundle';
+import initWidget from '../../../vue_merge_request_widget';
+
+export default function () {
+  new Diff(); // eslint-disable-line no-new
+  new ZenMode(); // eslint-disable-line no-new
+
+  initIssuableSidebar();
+  initNotes();
+  initDiffNotes();
+  initPipelines();
+
+  const mrShowNode = document.querySelector('.merge-request');
+
+  window.mergeRequest = new MergeRequest({
+    action: mrShowNode.dataset.mrAction,
+  });
+
+  new ShortcutsIssuable(true); // eslint-disable-line no-new
+  handleLocationHash();
+  howToMerge();
+  initWidget();
+}
+

app/assets/javascripts/pages/projects/merge_requests/show/index.js

-import MergeRequest from '~/merge_request';
-import ZenMode from '~/zen_mode';
-import initNotes from '~/init_notes';
-import initIssuableSidebar from '~/init_issuable_sidebar';
-import initDiffNotes from '~/diff_notes/diff_notes_bundle';
 import initSidebarBundle from '~/sidebar/sidebar_bundle';
-import ShortcutsIssuable from '~/shortcuts_issuable';
-import Diff from '~/diff';
-import { handleLocationHash } from '~/lib/utils/common_utils';
-import howToMerge from '~/how_to_merge';
-import initPipelines from '~/commit/pipelines/pipelines_bundle';
-import initWidget from '../../../../vue_merge_request_widget';
+import initShow from '../init_merge_request_show';
 
 document.addEventListener('DOMContentLoaded', () => {
-  new Diff(); // eslint-disable-line no-new
-  new ZenMode(); // eslint-disable-line no-new
-
-  initIssuableSidebar();
+  initShow();
   initSidebarBundle();
-  initNotes();
-  initDiffNotes();
-  initPipelines();
-
-  const mrShowNode = document.querySelector('.merge-request');
-  window.mergeRequest = new MergeRequest({
-    action: mrShowNode.dataset.mrAction,
-  });
-
-  new ShortcutsIssuable(true); // eslint-disable-line no-new
-  handleLocationHash();
-  howToMerge();
-  initWidget();
 });